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Petronaphthalene rectification reflux temperature control device and control method thereof

A technology of reflux temperature and control device, which is applied in the field of petroleum naphthalene rectification, can solve the problems such as difficulty in controlling the reflux temperature of ethylene tar, and achieve the effects of easy control of reflux temperature, production cost saving, and easy control of recovery of naphthalene gas.

Inactive Publication Date: 2014-04-30
KUITUN DAYI PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a petroleum naphthalene rectification reflux temperature control device and its control method, which overcomes the deficiencies of the prior art and can effectively solve the problem that the reflux temperature is difficult to control when ethylene tar is cut and separated.

Method used

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  • Petronaphthalene rectification reflux temperature control device and control method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, this petroleum naphthalene rectification reflux temperature control device comprises rectification tower 1, condenser 2, reflux tank 3, tower top reflux pump 4, naphthalene gas absorption tank 5 and naphthalene gas absorption tower 6; Naphthalene gas absorption tank The upper end of 5 and the lower end of naphthalene gas absorption tower 6 are fixedly connected together and communicate with each other. There is a rectification tower gas outlet at the top of rectification tower 1, and a rectification tower liquid inlet is arranged at the top of rectification tower 1. The gas outlet and the tube-side inlet of the condenser 2 are fixedly connected together through the first pipeline 7, the tube-side outlet of the condenser 2 and the top inlet of the reflux tank 3 are fixedly connected together through the second pipeline 8, and the bottom outlet of the reflux tank 3 The inlet of the tower top reflux pump 4 is fixedly connected together by the third pipeline 9,...

Embodiment 2

[0020] Embodiment 2 differs from Embodiment 1 in that: a hot water tank 22, a hot water circulation pump 23 and a cooler 24 are arranged outside the condenser 2; a heat conduction oil coil 25 is fixedly installed in the hot water tank 22 12th pipeline 26 and 13th pipeline 27 are fixedly connected to the inlet and outlet of the heat-conducting oil coil 25 respectively, and the outer ends of the 12th pipeline 26 and the thirteenth pipeline 27 are located outside the hot water tank 22; The bottom outlet of the water tank 22 and the inlet of the hot water circulation pump 23 are fixedly connected together through the fourteenth pipeline 28, and the outlet of the hot water circulation pump 23 and the tube side inlet of the cooler 24 are fixedly connected together through the fifteenth pipeline 29 , the tube-side outlet of the cooler 24 and the shell-side inlet of the condenser 2 are fixedly connected together through the tenth pipeline 19, and the shell-side outlet of the condenser ...

Embodiment 3

[0021] Embodiment 3, differs from Embodiment 1 and Embodiment 2 in that: the 18th pipeline 32 is fixedly installed on the 4th pipeline 10, and the 19th pipeline 33 is fixedly connected on the gas outlet of the naphthalene gas absorption tower 6 , a vacuum pump is fixedly installed on the nineteenth pipeline 33 . In this way, the gas phase not absorbed by the naphthalene gas absorbing liquid after the mass transfer and heat transfer reaction takes place is discharged through the nineteenth pipeline 33 and the vacuum pump.

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Abstract

The invention relates to the field of petronaphthalene rectification technology, in particular to a petronaphthalene rectification reflux temperature control device and a control method thereof; the petronaphthalene rectification reflux temperature control device comprises a rectification tower, a condenser, a reflux tank, a tower top reflux pump, a naphthalene gas absorption tank and a naphthalene gas absorption tower; the upper end of the naphthalene gas absorption tank and the lower end of the naphthalene gas absorption tower are fixedly connected together and communicated with each other, a rectification tower air outlet is arranged at the top of the rectification tower, a rectification tower liquid inlet is arranged in the upper part of the rectification tower, the rectification tower air outlet and a tube pass inlet of the condenser are fixedly connected together by a first pipeline, and a tube pass outlet of the condenser and a top inlet of the reflux tank are fixedly connected together by a second pipeline. Through the combination of the rectification tower, the condenser, the reflux tank, the tower top reflux pump, the naphthalene gas absorption tank and the naphthalene gas absorption tower, the purposes of easily controlling the reflux temperature and recovering naphthalene gas can be realized, the petroleum naphthalene refined reflux temperature control device and the control method thereof have the characteristics of easily controlling the reflux temperature and being environment-friendly, the production efficiency is improved and the production cost is saved.

Description

technical field [0001] The invention relates to the technical field of petroleum naphthalene rectification, and relates to a petroleum naphthalene rectification reflux temperature control device and a control method thereof. Background technique [0002] Petroleum naphthalene is a white flaky crystal at room temperature, has a special odor, is volatile and sublimates easily, has a density of 1.162, a melting point of 80.5°C, and a boiling point of 217.9°C. It is insoluble in water, but soluble in ethanol and ether. When the ethylene tar is cut and separated by a rectification device, it is difficult to control the reflux temperature due to the nature of the petroleum naphthalene component which is easy to vaporize at high temperature and easy to solidify at low temperature. Contents of the invention [0003] The invention provides a petroleum naphthalene rectification reflux temperature control device and a control method thereof, which overcome the above-mentioned deficie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C1/12
Inventor 尤学民于荣靳豫东高磊徐江
Owner KUITUN DAYI PETROCHEM TECH
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